package com.sqly.doc.util;

import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.support.v4.content.FileProvider;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ProgressBar;

import com.sqly.doc.R;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;


public class UplodeManager {
    private Context mContext;
    private String apkurl;

    // 提示语
    private String updateMsg = "有最新的软件包，快下载吧~";

    // 返回的安装包url
    private String apkUrl;

    private Dialog noticeDialog;

    private Dialog downloadDialog;
    /* 下载包安装路径 */
//    private static final String savePath = "/sdcard/updatedemo/";
//    private static final String savePath = PictureUtil.getMyRootDirectory();
      private static final String savePath = Environment.getExternalStorageDirectory().getAbsolutePath();

    private static final String saveFileName = savePath + "/PriceInfo.apk";
//    private static final String saveFileName = Environment.getExternalStorageDirectory()+"/PriceInfo.apk";

    /* 进度条与通知ui刷新的handler和msg常量 */
    private ProgressBar mProgress;

    private static final int DOWN_UPDATE = 1;

    private static final int DOWN_OVER = 2;

    private int progress;

    private Thread downLoadThread;

    private boolean interceptFlag = false;

    private Handler mHandler = new Handler() {
        public void handleMessage(Message msg) {
            switch (msg.what) {
                case DOWN_UPDATE:
                    mProgress.setProgress(progress);
                    break;
                case DOWN_OVER:

                    installApk();
                    break;
                default:
                    break;
            }
        }

        ;
    };

    public UplodeManager(Context context, String url) {
        this.mContext = context;
        this.apkUrl = url;
    }

    // 外部接口让主Activity调用
    public void checkUpdateInfo() {
        showNoticeDialog();
    }

    private void showNoticeDialog() {
        AlertDialog.Builder builder = new Builder(mContext);
        builder.setTitle("软件版本更新提示");
        builder.setMessage(updateMsg);
        builder.setPositiveButton("下载", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
                showDownloadDialog();
            }
        });
        builder.setNegativeButton("以后再说",
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                    }
                });
        builder.setCancelable(false);
        noticeDialog = builder.create();
        noticeDialog.show();
    }

    private void showDownloadDialog() {
        AlertDialog.Builder builder = new Builder(mContext);
        builder.setTitle("软件正在更新中");
        builder.setCancelable(false);
        final LayoutInflater inflater = LayoutInflater.from(mContext);
        View v = inflater.inflate(R.layout.progress, null);
        mProgress = (ProgressBar) v.findViewById(R.id.progress);

        builder.setView(v);
        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
                interceptFlag = true;
            }
        });
        downloadDialog = builder.create();
        downloadDialog.show();

        downloadApk();
    }

    private Runnable mdownApkRunnable = new Runnable() {
        @Override
        public void run() {
            try {
                Log.i("apkUrl",apkUrl);
                URL url = new URL(apkUrl);
                HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                conn.connect();
                int length = conn.getContentLength();
                InputStream is = conn.getInputStream();

                File file = new File(savePath);
                if (!file.exists()) {
                    file.mkdir();
                }
                String apkFile = saveFileName;
                Log.i("apkFile", apkFile);
                File ApkFile = new File(apkFile);
                FileOutputStream fos = new FileOutputStream(ApkFile);

                int count = 0;
                byte buf[] = new byte[1024];

                do {
                    int numread = is.read(buf);
                    count += numread;
                    progress = (int) (((float) count / length) * 100);
                    // 更新进度
                    mHandler.sendEmptyMessage(DOWN_UPDATE);
                    if (numread <= 0) {
                        // 下载完成通知安装
                        mHandler.sendEmptyMessage(DOWN_OVER);
                        break;
                    }
                    fos.write(buf, 0, numread);
                } while (!interceptFlag);// 点击取消就停止下载.

                fos.close();
                is.close();
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }

        }
    };

    /**
     * 下载apk
     *
     */

    private void downloadApk() {
        downLoadThread = new Thread(mdownApkRunnable);
        downLoadThread.start();
    }

    /**
     * 安装apk
     *
     */
    private void installApkOld() {
        File apkfile = new File(saveFileName);
        if (!apkfile.exists()) {
            return;
        }
        Intent i = new Intent(Intent.ACTION_VIEW);
        i.setDataAndType(Uri.parse("file://" + apkfile.toString()), "application/vnd.android.package-archive");
        mContext.startActivity(i);

    }

    /**
     * 安装apk
     */
    private void installApk() {
        File apkFile = new File(saveFileName);
        Log.i("saveFileName", saveFileName);
        if (!apkFile.exists()) {
            Log.i("exists", "no");
            return;
        }else{
            Log.i("exists", "ok");
        }
        Intent intent = new Intent(Intent.ACTION_VIEW);
        //执行动作
        Uri apkUri = null;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) { //7.0以上版本，需要配置权限才能安装未知来源的程序:本代码的处理是使用FileProvider读取Uri资源
            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
            //参数1-上下文, 参数2-Provider地址(与AndroidManifest.xml文件中保持一致)   参数3-apk文件
            apkUri = FileProvider.getUriForFile(mContext, mContext.getPackageName() + ".fileprovider", apkFile);
            //添加这一句表示对目标应用临时授权该Uri所代表的文件
        } else {
            apkUri = Uri.fromFile(apkFile);
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        }
        intent.setDataAndType(apkUri, "application/vnd.android.package-archive");
        mContext.startActivity(intent);
//        mContext.finish();
        android.os.Process.killProcess(android.os.Process.myPid());
    }

}
